For pet pricing, your non-themme prices seem good enough tho i alwais recomand players to just releass pets they dont want/dont have an attachement too if they are non themmed and have 1 or no traits once they get 42 days old, it save on feeding fee and increass your LG egg spawn. ^-^

For the themmed, it require a bit more research then that, 7k can be a good price for common wild themmes but old or well liked exclusive can be worth quite a bit even as pb and underpricing them could hurt the themme if mass produced. When in doubt, alwais use the advenced search to see the price for pets avalable of this themme (pb are disabled by default, dont forget to switch it to any to vew them) and if there is none, chances are some players in the public market place will be interessed by it and give you a good price.

I am not too good with pricing art since it change so mutch, my advice would be to look through the others thread to get an idea.