Are there cheaper kits or configurations other than this one offered
by Miller, or is this a good deal at $530ish?

Miller Contractor Kit with RFCS-14HD ALL-IN-ONE Accessory Kit

Kit includes: Protective Case with carrying handle, DB1725R (25 ft)
TIG torch, RFCS-14 HD foot control, International Style Torch
Adapters, Regulator/Flowmeter, 200A Electrode Holder with 15 ft cable,
300A Work Clamp with 15 ft cable, 12 ft Gas Hose, AK-2 Torch accessory
kit, Gas hose coupler.
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Here is another setup for about $500 with the RFCS-14HD foot control
added. This better way to go? Do you recommedn 150Amp torch instead of
the 200Amp torch? Thanks...

200 Amp Air-Cooled TIG Torch Pkg.200 Amp Air-Cooled starter set comes
complete with:
Diamondback DB26R 200A, 25-foot TIG Torch
Argon Flowmeter/Regulator
10' Gas hose
15' Ground cable with clamp
TIG power block adapter
TIG spare parts accessory kit
TIG welding handbook