Rank Upgrades
Worker Rank -> Assembler Rank 99.99 5.00 USD Buy
Assember Rank -> Fabricator Rank 149.99 7.50 USD Buy
Fabricator Rank -> Expeditor Rank 149.99 7.50 USD Buy
Expeditor Rank -> Foreman Rank 249.99 12.50 USD Buy
Foreman Rank -> Mechanic Rank 249.99 12.50 USD Buy
Mechanic Rank -> Engineer Rank 499.99 25.00 USD Buy