mini grip is about $60 in new form, thats twice his budget. though i think the mini grip is a great knife.
for similar budget i would recommend one of the kershaws...i don't own a buck, but from what everyone says, that should be a good option as well...
there are a bunch of online shops that have close outs and sales on stuff that you could check out. some places i would recommend, knifeworks.com, 888knivesrus.com, agrussell.com, knifecenter.com, bladehq.com, and knifesupply.com
I would browse those places. You will determine which is the cheapest by brand, but all of those companies have been decent for me in terms of customer service (well one is a bit less than the others, but their prices are good). You can learn a lot just by reading those sites. Sites like AG Russell have a lot of info.
Rich