I did this as a student. It was possible to start to learn about what the market demands. For example, an old out of service Raleigh Shopper/Twenty can be had for £20 on eBay. You can buy those and rebuild them, buying basic components to replace the busted parts and sell on for £100. Overall I made £20-£40 profit when I counted things like travel, cost of parts and consumables. Some might say a part time job pays better.
I did this as a student. It was possible to start to learn about what the market demands. For example, an old out of service Raleigh Shopper/Twenty can be had for £20 on eBay. You can buy those and rebuild them, buying basic components to replace the busted parts and sell on for £100. Overall I made £20-£40 profit when I counted things like travel, cost of parts and consumables. Some might say a part time job pays better.