What can you get for $20? A basic cat tail, or a single color fluffy canine tail (cat not included.) And if you want something bigger or fluffier, those are on sale too. There are too many options to list here, so I'll just link to my tail gallery. Tell me what you'd like and I'll give you a quote.
Shipping is just $5 for all US orders, and $8 for all international orders. Tails take 2-3 weeks to sew, so you won't have to wait long. :)
Ears are on sale as well, and start at just $15. No additional shipping charge if you include ears with your tail order.