Rehoming two sister cats

We are rehoming two litter mate sister cats. They will be 1 year old in August. They have just started going outside and love it! Unfortunately, our son has a cat allergy and we hoped it would get better with medication so we could keep them, but it isn't. The cats come with scratching posts, food dishes, food, catbox, cat litter, toys, and a huge cat tree. They are current on their vaccinations and they are chipped. We are asking for a rehoming fee of $100 and we want them to go with each other. Please text me at show contact info .