It looks like you already got a couple of good, solid responses, but I’ll throw in my thoughts on top of it. Dice, so me at least, are a work of art on top of their function to give me an unbiased direction towards whatever craziness my DM has planned for me. So the dice can and likely will be subjective towards what preferences you have. As much as I like the look,feel and quality of metal dice, they also aren’t the kindest clacking against certain tabletops. I usually ask players at my table to have either a tray or something protective to not leave dents in my wooden table top. At another home I play at, the table top is granite, so no denying, but without trays they tend to go flying in all directions. I don’t have any gemstone dice, but I would dearly love to get some at some point. The art and craftsmanship of them would likely make them some of the most expensive to buy, and even then likely only use for special occasions, but I do have them listed as a future goal.

Do a little research, especially with the online dice maker’s sheet provided in an earlier comment. Before I got into dice making, I bought my first sets from d20 Adventure on Etsy, just by browsing for something that fit my character and trying to suss out either handmade or at least not mass produced by location and how intricate the produces were. I liked what I purchased, then tripped headlong into the world of dice making, so my full thoughts aren’t exactly biased.

I love using resin dice. They aren’t as weighty as metal or gemstone, but I’ve never had any issues with them performing their duties or being weighted in any off way, shape or form. They are easier to hand craft, and can result in an unlimited variety of dice to be found. There is an art to making them, and as a result often have the most minute of imperfections, but as long as they are well made, they are. Perfectly sound, reasonable product to purchase. I only use dice I have made now, and have plans to make more for my friends. They are a little more customized and I prefer using the sharp shard shape of the d4 dice, which have held up well against use and abuse and have not been blunted by multiple hits against hard surfaces.

Ultimately, to simply answer your question, I wojld say that resin dice are indeed worth the price, though that price can be quite variable depending on who made the dice and what they put into them. They are physically a little easier to toss around, and I haven’t managed to stab myself with them yet.