I don't think this service would necessarily be marketed to DIY. There are 2 types of DIY as I see it. Those that are cheap out of necessity or habit and those that are into learning and doing. Neither would probably bother much with consulting.
Those that have occasional hort, agronomic or irrigation problems I would guess and maybe wrongly, might be the target market.
I'm basing this on the phone calls I field even though we don't advertise consulting.