John,
Higher prices won't make effort needed for bids any easier. Won't decrease time for each, won't shorten drive between.
Bid 60 prospects, close 1/3, average $1,000 each, earn $20,000 for 20 jobs.
Bid 60, close 1/6, average $1,250 each, earn $12,500 for your efforts.
You'll increase...