Any lenders or services who enable real estate clients to make cash offers?

[Richard Evanns]

Esteemed listmates,

I have a couple of RE clients who are going after properties which are the types of properties that cash investors are snapping up. Value add, lower price point, up and coming hoods- these guys are getting zero traction on conventional offers for the stuff they are after. 

I have seen services advertised which allow people to make cash offers. Curious if anyone has any experience with these services, or if there are lenders who do this? and for real estate agents- wondering if its even ethical?