okay, any specific species?

I'd buy paw-shoes. And maybe a pair of paw-hands to go with 'em. (But unfortunately, I'm broke.)

I'd purchase plushies of pokemon x'D or my characters.
I'd also totally get a hoodie with ears and tail sewn on it.

Sorry, I can't do Pokémon, it's illigal

I would only use a fursuit for halloween, so I'd probably buy plushies of cats, foxes or dragons x3 But any small animal would be adorable, as long as they are below $30 >u<

Also, I still can't find your shop! How should I find you when typing in 'furends' does not work?

Hmm, have you searched "furends" in etsy itself?

I finally found your shop! And oh my gosh, your tail designs are beautiful!! They look so furry and fancy! :D
Although, despite my savings, the prices are kinda biting at me, at least since I would rarely use a tail xP However, I am one to really bother over prices, and they might be made of expensive hard-to-find materials.
My thoughts would be to create more tails made of cheap materials, to attract buyers. Then they would look into your shop and check out the more expensive things.
And, of course, MAKE LOTS AND LOTS OF PLUSHIES!! I will definitely buy TONS of plushies, if they aren't too pricy >uo

Just now I found a shop named lemonbrat who sold a fox tail-and-ear set to hundreds of people within weeks. I don't know if it's because she's just popular, but the tail's easy-to-find material and low price made it a lot friendlier to broke people like us.
All you need to do to get started is sell cheap tails, so people will start following you and will eventually buy more things and spread the news about you ^-^

I would love plushies, mainly of serpents.