Wanted: In Desperate Search of Hypoallergenic Pup $800-1000

Hello! We are a family of 4 desperately searching for a hypoallergenic affordable puppy or young dog. We have done fostering through local rescues, have a home with a large backyard & have lots of love to give. Sadly after fostering we quickly realized my husband & son have bad allergies. We have promised our sons a puppy, but have now had an impossible time finding one in our price range. We would be able to pay $800-1000 maximum. Please email me if you have one available or know of any leads. Thanks in advance.