Some privately owned shops like Dry Goods for Animals and other small mom and pops dry good for pets do sell sample packs which they bag down which some people don't like but if it doesn't bother you try finding smaller retailers selling both bulk bin pellets and manufacturer sealed bags as two of mine bag down 2 to 4 ounces of each pellet they sell and they sell them all harrisons, rbush, lafeber, zupreem, pbird and more and for ten bucks I get 3 lbs total and at least I can see and try them without buying each one, they have them done up in a big gallon size zip bag which has each pellet bagged in little zip bags in the big bag. they have small, medium and large bird sizes in these sample packs. I don't buy anything from any shop selling any live animals only dry goods only shops and I do trust a couple shops to bag down bulk bags as they are careful, clean and use a human food sealing machine to seal all the bagged down bulk pellets and seed mixes and don't just do a twist tie or tie the bag. sample packs are popular with pellets in these shops as some parrots might take to a pellet and I just do a multi pellet mix and sometimes a bird will just pick one out and stick with that one. they need something to reject and I've mixed in 'reject' pellets with new to them pellets and sometimes they will try the new ones, some birds just need something to reject to make them try something