It's a certain amount of risk. You have to decide what amount you are comfortable with. I view my non returnable eBay purchases this way. I assume about 25% of them won't work out. But that 75% that do are usually awesome things at even better prices, so it's worth the risk, to me. Of course, I have a mental dollar limit that's worth risking. It rarely goes over $20 lol.

If the fit is great, I'd go for it... after you get your answer back from your tailor.

Shiny, I LOVE your stripey jacket. Where was I last year?

Anything that has "perfect fit" in its description has my attention. The fact you're considering it tells me that even for you those $10 are a risk worth taking

Shoulderpads can be easily fixed.

Now, let's see you in it.