The Easton 'Black Magic' series of gloves were the best gloves you could get for <$75, synthetic or otherwise. It's spongy and the velcro back is strange, but it's incredibly light and holds up well. Only the laces were leather I believe.
On a side note, if you have ethical problems with...
Cleaning out today and found these 3 gloves.
The GG47 was used for a year of high school pitching.
https://drive.google.com/open?id=1SGTb92Bx-wrPjCkG4PTtPx_LoCt6Z0DB
The XL is a couple decades old and in pretty poor condition, but still 100% functional. Recently relaced. I think it was a...