If you have tried Reselling before then you will know that it isn’t easy! The 2 biggest challenges to overcome are:
1) Knowing how to price your items
2) Consistently finding profitable items to flip
The old school way of doing this would be to sit on Vinted and keep refreshing the screen to find items and to use EBay's sold listing filter to try and find a price to sell at.
I used to do these things probably like you did too, but I got to the point where I wanted to Scale my business up. To do this I needed to start thinking smarter and decided to invest some money into automated systems that help me find profitable items easier and more frequently, also an item appraisal system which gave a bang on price of what my item was worth after I had told it the condition/size and name.
This all cost me a lot of money but was well worth it as it's changed the Reselling Game
Because of the success I have had from this I set up a plan to make it accessible for all Resellers and I have now done this! It is 1/50 of the price that it cost me so it is as affordable as possible for everyone this means even new resellers can afford to get a head start in their reselling career.