I am honestly interested to know if this is totally wrong as I have always thought it was ok.
Example is I bought a shirt for my partner before christmas and it cost £89 (much more than I would normally ever spend). In the sale it was reduced to £62 so I bought it again at £62 and returned the £89 one so it saved me £27. The bit that could be bad is that he had worn the £89 one so I used the £89 receipt to return the £62 one (getting complicated now!).
So, the shop still got a perfect condition unworn shirt back but ....
Please tell me this is ok ....? If you're not totally bored by now 