"It's more than I ever thought we would get - I put it on with a $250 reserve. I never thought of it going above that," Mr Jenkins says.
The winning bidder wished to remain anonymous, only revealing that he lived in Auckland - and his plans to try and unite Mr Collins' loved ones with the artwork.
"He contacted us [on Monday] and hopes to donate my picture back to the family."
Minutes before the auction ended page views clicked over to 50,000 - but there was no final frenzied bidding war.
"The winning bid had been there for a day and a half."
While Mr Jenkins never intended to create so much talk about his work, it has had a positive spin off for his art.
"There's been a whole lot of awesome comments, people contacting me, I'm going to look at a gallery show - it's totally blown me away."
The artist who poured his heart and soul into the pencil sketch posted the funds to a Givealittle page, so the bidder's identity would remain a secret, along with with a moving message.
"RIP Jerry and Alana. This is the money we raised from my drawing ... we have you all in our thoughts," it read.