FYI-- I wasn't able to make the trip this year due to some personal matters, but my friends that did shoot doves in Argentina this past April ended up paying $26.50 a box for 12 & 20-gauge ammo. The last time I went in '23 the same ammo was 12 to 15 a box & there were 2000 rounds included in the package price, this year's outing was void of any inclusive ammo. On a high-volume shoot like doves in Argentina a buck per pull of the trigger adds up really fast.
I haven't looked into it, but I think there are outfitters still charging more reasonable rates for ammo, but you might have to search them out, plus you need to make sure they have a good dove population. The drought in the Cordoba region over the past few years has affected the population in some areas & you need to do your homework before picking an outfitter.