I've been eying this for a while. Cheapest I've ever seen it. Doesn't come with a battery, but DTO is offering lots of good Ryobi deals for Father's Day Weekend. As for DTO, factory blem will be indistinguishable from new, but refurbed is a crapshoot. These are factory blem.
https://www.directtoolsoutlet.com/product/P3100
Also, these can use Hakko tips.