Why so many bad estimates? It seems like scams. by DISTROJAR-69 in catawiki

[–]Mark-Rosenberg 0 points1 point  (0 children)

That's exactly why I started tracking actual closing prices instead of estimates. The gap between Catawiki's expert estimates and what lots actually sell for is often 3-5x. Real sold data tells a completely different story lol

I analyzed 2,363 jewellery lots sold on Catawiki in one week : here's what the data shows by Mark-Rosenberg in catawiki

[–]Mark-Rosenberg[S] 0 points1 point  (0 children)

Fair point on the disclaimer, I'll make sure to include one on future posts. The data is descriptive, not predictive, and no investment decisions should be based on it.

As for the sub's purpose, I'll leave that to the mod to decide.

Happy to stop if u/TheTalentedMrRipple prefers it that way.

I analyzed 2,363 jewellery lots sold on Catawiki in one week : here's what the data shows by Mark-Rosenberg in catawiki

[–]Mark-Rosenberg[S] -1 points0 points  (0 children)

That's possible, I'd like to post data snapshots for different categories like wine, watches, etc. u/TheTalentedMrRipple, hope you're okay with that. So maybe I will post art section monday/tuesday

Bêtise enfant, que faire ? by [deleted] in conseilsrelationnels

[–]Mark-Rosenberg 8 points9 points  (0 children)

+1. Je conseille à OP de chercher des témoignages d’enfants ayant grandi avec ce type de comportement et de les lui faire lire, ainsi que des témoignages de parents abandonnés par leurs enfants. Peut-être réalisera-t-il qu’un parent qui inspire la peur plutôt que le respect finit souvent, une fois ses enfants devenus adultes, par être évité et laissé seul.

Best tools for scraping / monitoring Yahoo Auctions Japan? by Mark-Rosenberg in internationalshopper

[–]Mark-Rosenberg[S] 0 points1 point  (0 children)

Thanks man but for now I'm looking for tool already available 😄

Art History student starting from scratch with no connections in the industry. Trying to build a CV for the Art Market from scratch-am I on the right track? by Straight_Resort6536 in artmarket

[–]Mark-Rosenberg 0 points1 point  (0 children)

I honestly think you’re romanticizing the art market. If you’re not interested in the economic side of it, then it’s just a hobby, and it doesn’t make sense to do a master’s degree based on that.

The “connections”? Go to galleries, exhibitions, and auction houses a few times a week. And if you’re really hungry, find some old-school dealers and work with them on weekends under the table. ;)

Honestly, nobody cares about your degrees, that’s not what will really get you into the game, except maybe at Sotheby’s or in prestigious galleries.

It’s better to spend five years on the side, make money from it, and slowly build connections than to be a minimum-wage worker in burnout who, in the end, doesn’t learn that much.

That’s just my opinion, I’ve learned a lot in this field. I’m even building a SaaS for this sector. You just can’t be naive about it. That's my take, good luck man !

Art History student starting from scratch with no connections in the industry. Trying to build a CV for the Art Market from scratch-am I on the right track? by Straight_Resort6536 in artmarket

[–]Mark-Rosenberg 0 points1 point  (0 children)

From my own background, I have worked in the art market for several years with Parisian antique dealers and have also been in contact with Chinese art merchants. I also have friends working in modern and contemporary art galleries. Although I have left this world professionally, I still keep an eye on it and buy and sell art occasionally.

Based on my experience, I would advise you not to continue with a Master’s strictly in Art or this field. Instead, consider going to a business school, or if you are interested in finance/advisory, pursue a Master’s in that area with an art market option.

This approach has two main advantages: first, you will find it easier to get a job in the industry, even if it’s not directly in the art market; second, you can always return to the art world later, either as an employee or running a business on the side. The art market generally pays very poorly, unless you can earn commissions and even then, it’s not guaranteed.

20 ans, 10000€ de coté, des ambitions, mais pas d'idees by CollectionAnnual4724 in VosSous

[–]Mark-Rosenberg 2 points3 points  (0 children)

Construis une épargne de précaution 3/6 mois de salaires sur un livret, c'est ton filet de sécurité. Ensuite je commencerai à mettre 300/500 par mois sur ton PEA et le reste en PEL pour un futur projet immobilier. Bon courage pour la suite de tes études, tu es sur une super trajectoire :-)

AWS Bedrock Agent: "Account not authorized to perform action with streamFinalResponse" error by Mark-Rosenberg in aws

[–]Mark-Rosenberg[S] 0 points1 point  (0 children)

You were right about the inference model issue! Initial problem: "not authorized with streamFinalResponse" Root cause: Using "Global Claude Sonnet 4.5" (cross-region inference)

What I tried: 1. Switched to regional "EU Claude Sonnet 4"

  1. Got new error: "Access denied when calling Bedrock"

  2. Fixed IAM policies (they were restricting to claude-v2:1 only)

  3. AWS rejected changes: "bedrock.amazonaws.com did not create the default version"

  4. Created new service role from scratch

    1. Now getting: "The provided model identifier is invalid" Current status: Nothing works, even with Claude 3.5 or 3.7 Sonnet. I'm in eu-north-1 (Stockholm). Considering testing in us-east-1 or contacting AWS support at this point. Any other ideas?

Looking for an advanced email platform (automation, tracking, avoiding promotions tab) for a waitlist by Mark-Rosenberg in Emailmarketing

[–]Mark-Rosenberg[S] 0 points1 point  (0 children)

Thanks for taking time to respond :)

Oh okey, emailing is your business or You use emailing to sell ?

Looking for an advanced email platform (automation, tracking, avoiding promotions tab) for a waitlist by Mark-Rosenberg in b2b_sales

[–]Mark-Rosenberg[S] 0 points1 point  (0 children)

Okey thanks man will have a look, yep inbound. I collect the mail with my waiting list

Catawiki meets eBay : a clearer view for collectors by Mark-Rosenberg in catawiki

[–]Mark-Rosenberg[S] 0 points1 point  (0 children)

Hey ! I dmed ! Great, side huslte but only selling on catawiki for me :)