Drew, Most manufacturers including Beretta make 10rd magazine packages so their firearms can be sold in States with magazine capacity restrictions. The only difference is the magazine (10rd) compared to the standard model package 15rd magazines. The price difference is due to number of each in stock as Buds prices are tied to stock level. The firearm will accept either capacity magazine. Cheers and stay safe!

Drew, this is Berettas standard capacity Beretta 92X. The ones with 10 rounds are just for states with magazine capacity restrictions. Normally the 10 round versions cost more due to the manufacturer having to pin the magazine Wich requires more work, therefore costs more. The 10 round versions can use higher capacity magazines and this one can use lower capacity magazines. Hope this helps.