Anything is good enough to 'attempt' to sell. You won't know whether it actually WILL sell until you 'attempt'.
|So go ahead and find out!

PS: 'Ex' does not mean 'for example'. It means 'former', as in 'My ex-husband lives in Arizona' or 'My ex-boss keeps asking me to go back to work'.
You mean 'eg'.

ummm I think maybe you have to bring a work of art, like a painting or a drawing... I don't know what else an "art object" would be.. a necklace, maybe? Or... a vase?

and the other would be a random thing, like a frying pan, and probably say stuff like art makes you feel things when you look at them and is handmade whereas a frying pan is not particularly interesting to look at. That's what I'd interpret, anyway x)