those mexican style training gloves have been at $20 for a while. when they first went on sale they also had title campeon mexican style gloves, which are said to be better for the same price. i think it was clamp that raided the whole inventory though and left nothing for me.
i did pick up those gloves in your link, although they are pretty much relegated to my backup training gloves (i use twins primarily). they're definately not bad and you really can't beat that price
get the hook and loop converters. They will save you some time.