Sweep The Moon money

How do I earn Cash fast?

Sell at the SELL pad or the Lunar Converter. The beginner loop is still the fastest documented start, because every tool page prices the next brush in Cash you get from that sale. Sell Value's first step, 2 Cash for +25 percent, raises those sales. Radio towers add a crew multiplier once you turn them on: East and South-West are 75 Cash for +0.1x per crew sale, North-West is 3,000 Cash for +0.03x, and Big Digger adds +0.05x for the crew. Those tower figures are one source.

2x Cash, the 249 Robux pass, is the paid multiplier, and it excludes Cash packs. I would turn on the 75 Cash towers before I look at the 3,000 Cash tower, because the cheap pair adds more per sale than the expensive one on the numbers printed.

What about Gems and Shards?

Gems appear as an alternate price: Cleaning Rover 25, Dust Carrier 95, Cleaning UFO 150, and one note that a zone completion awarded 8 Gems. That award is a single observation, not a rate card. Shards are listed as a currency by one wiki and are absent from the other write-up that talks about Cash and Gems. I am not going to invent a shard drop, a shard shop, or a shard price. The cell stays blank, and the status of that row is one source.