Doug Chase of chaserace.com in Duvall does good work and is quite familiar with Lemons caging requirements, but, as Fishah indicated, that's not the same as cheap.
By the way, with any cage builder the standard advice is to make absolutely certain they understand that Lemons has its own specific requirements. Too many teams have failed tech because their builder decided that their personal way of doing things was "just as good as" or "better than" the rules. Just because something is okay elsewhere doesn't necessarily mean it's okay in Lemons.
1982 MG Metro 1300: IOE 2015 Pacific Northworst GP, Longest Distance 2010 Cd'L Box Wine Country Classic
1980 KV Mini 1: Worst of Show and Fright Pig Supremo 2009 Concours d'Lemons
1978 H Special: Second-Round Elimination 2010 Lemons Pinewood Derby at Sears Pointless
1967 SAAB 96: IOE 2012 Pacific Northworst GP, Organizer's Choice 2022 Hell on Wheels California Rally