1925 Buffalo nickels were struck by all three then-operating mints (Philadelphia, Denver, and San Francisco), but were by no means among the most populous entries of the series. At best, the 45 million or so Buffalo nickels made in 1925 help these issues to rank among the higher-mintage years of the series, but no where near the 60-70 million pieces that were struck during the years 1916 through 1920.
1925 Buffalo nickels are generally inexpensive, at least as compared to the earliest issues in the series. Therefore, they are not terribly expensive for the coin collector on a budget, at least in terms of circulated issues (uncirculated branch-mint 1925 Buffalo nickels can run into the hundreds of dollars). In Good-4, the 1925 runs $3, the 1925-D $10, and the 1925-S $5, though prices for the branch mints quickly escalate above $100 for examples in the higher circulated grades.
As is the case for all Buffalo nickels, 1925 nickels are generally not well struck. This is particularly true for branch-mint issues, so be sure to cherrypick when buying 1925-D and 1925-S Buffalo nickels. Though hard to find, nicer 1920s branch-mint Buffaloes exist, but you may need to be patient in finding them.