She bagged four aces across Sunday's two sets and nailed 64 per cent of first serves, keeping the dynamic Vickery pinned back for most of the match.
"I didn't know what kind of performance I was going to put in this week, whether I was going to do well", he said.
Budge said he wouldn't move the singles competition indoors either - once again raising the spectre of a long-promised roof for the Auckland arena.
His best run at an Australian Open was a quarter-final exit in 2015.
"It's good to see the work I was doing in the off-season is paying off".
Powerful-serving Julia Goerges stunned top seed Caroline Wozniacki with a straight sets win in the WTA Auckland Classic final on Sunday.
The German beat Polona Hercog 6-4 6-4 in the quarter-finals before moving into the final with a 6-1 6-4 win over Taiwan's Hsieh Su-wei. Games went with service from there in the first set, which Goerges sealed with her seventh ace.
The second-seeded Goerges forced top-seeded Wozniacki onto the defensive.
After the match, she said her achievement felt "amazing". "That's just making me proud and I'm just enjoying every moment of it".
Wozniacki, meanwhile, vowed to get her revenge at the Australian Open in Melbourne later this month.
"I felt a little exhausted going into the second match and then I played really well, started well, and I was like, this is going to be a good day at the office - and all of a sudden it's like, I'm starting to get a little more exhausted", Wozniacki said.
The 29-year-old's victory at the Classic is also her third consecutive WTA title, having won events in late 2017 in Moscow and Zhuhai.
Elsewhere on the tour, British No 2 Heather Watson came through an early scare in her second qualifying match to reach the main draw at the Hobart International.