I upgraded mine when the electronic conversion kits first came out (10 years ago??), but at that time I only had 3 single column vendor plus one 5 col little trees vendor. (I have since added 5 more electronic drop shelfs and a shur-vend.) My primary reason for the upgrade was so that I could accept
tokens in the vendors - critical for me because I stopped selling quarters out of my change machine.
Was it worth it?
For the 5 col tree vendor, absolutely, I sell a ton of them.
For the first 3 single col vendors which are my 3 highest selling vends, I think it was worth it.
For the remaining 5 drop shelfs... I dont know.
The mechanicals just seem outdated to me, I think it presents the wrong image of your wash.
Regarding MEPs comment about getting a spiral vendor - true, cant argue with that. IF you have a good place to put one. I have both, and no I will not be selling my drop shelf vendors because I still sell about 30% of my
vending through them. (Thats an off the top of my head estimate.)