Am I dumb or is this taking advantage of someone's neglected buy order

Alright scope this one out homies. I went to sell a call on DOCN and noticed that someone out there had an open bid for $4.40 for the $180 contract, when options closer to the strike were cheaper. This looked like an easy W, so of course I sold them that call. Contracts are supposed to get cheaper as they move OTM, everyone knows that.

I've never seen this scenario before but there's not exactly a bunch of volume on this stock either. If I could, I would have continued selling more of these contracts.