Is it okay to buy and use previously owned jumper boots?

I have a green jumper horse. We're only jumping around 2'3 but everyone tells me I should get jumper boots. I hear Eskadron are the best and at one of the local tack shops in my city they have a set of front and back Eskadron boots for $110 but they have some wear and imprint marks from the previous owner. I dont have a lot of money and the set new would be around $225. Is it okay to use boots with an imprint with another horse? I dont want to do anything that will hurt his tendon or leg or anything like that. Please let me know.