My SaaS has similar revenue and I've thought about selling to fund other projects. In the past year 3 large companies cold emailed me about selling - one of them twice from different departments, but after a bunch of emails back and forth none of them went through with it (I've been asking for 5-10x yearly revenue)

I'm not sure if I'm asking for too much or if they're on a fishing expedition, but for now I'm content just running things myself and growing revenue.