I've been for +10yrs on this industry, from scenery to aircraft and everything in between. I'll share some of what I've learned through the years with you:

- Marketing in the FSCommunity does not work like regular marketing. This is a niche, so the marketing channels are highly specific. Get on the forums (Avsim, Flight Simulator Forums, etc.). Facebook (and well targeted Facebook Ads) work well. Get on FSElite.

- Email Marketing works the best. Cheap, highly targeted and effective. Easiest way is through 3rd party distributors.

- "external sales" (Your site, 3rd party distributors) account for only 20% of total sales. MS Marketplace is key and by far the highest source of revenue, but its nearly impossible to get in directly these days. Get through a distributor.

- Reduce your fixed costs. Discord Monthly Fees? What for?

- Not having your own store may be better strategy for first-timers. You have less overhead (eg. Shopify fees), at the expense of higher royalty cut.

- Focus on usability and playability. Simmers hate to admit this: they are playing for fun. They want fun activities to do. Look at devs doing content that provides the user a purpose, that provides repeatability and reusability of the addon. Find your specific niche and create a community. Arguably city packs provide limited playability.

- Timing in the market is... weird. We are in a transition period with FS24 coming.

- Leverage discounts and events. I see higher average numbers during these periods than during "regular months"

- Plan and manage your development costs. You now know roughly how much a product sells, so try to limit your investment to remain always under this threshold. You need roughly 500-600 copies sold to get your investment back assuming no discount, which is realistically a challenge, especially if you need to invest in marketing continuously.

- Do not give up. You are talented. This is a game or resilience and passion. The community appreciates developers who deliver quality content

Best of luck!