I also just started sewing stuff to sale I would make things for my girls only at first, dresses, coats, panties. Now its bally bands, create pads & covering, vest and doggies blankets... and I have them at low price because I'm just starting and I do it because I like you I need something to do or I'll drive my Yorkie crazy.
Also you need to look at size xxsm to Lrg and what is it a dress Lrg or a vest small, big difference in work and cost. Type of material Fleece or Velvet/w Faux Fur, details dress beaded by hand or just iron flower.
Like they say " Time is money" , some times the smallest is the hardest and unless your making it you'll know what I mean.
Show us pictures that's the only way to price.
Good Luck!!