I'm going to start investing so I'm just wondering how long I should wait till I sell a set after it's EOL?

I would say when the appreciation slows to just about nothing.

I'm going to start investing so I'm just wondering how long I should wait till I sell a set after it's EOL?

Completely depends on the set and your need to flip it for money on hand. Some sets, if picked correctly, seem to take off immediately after going EOL, and the secondary market is the only place to find the, i.e. Harry Potter sets from 2011. Others take more time since there are so many of them out there.( I am assuming sets like Fire Brigade) In a perfect world, you would hold onto it until the point it can't gain any more value. This can't always be the case due to extenuating circumstances such as needing the money for future investments. Many on here have a set % Return On Investment that they use for sales. Others sell at the holidays when there is a flush of buyers. Others hold on forever.( Ed ) Even others when they are running out of space. So it really depends on your situation and the sets you have chosen to invest in.

Completely depends on the set and your need to flip it for money on hand. Some sets, if picked correctly, seem to take off immediately after going EOL, and the secondary market is the only place to find the, i.e. Harry Potter sets from 2011. Others take more time since there are so many of them out there.( I am assuming sets like Fire Brigade) In a perfect world, you would hold onto it until the point it can't gain any more value. This can't always be the case due to extenuating circumstances such as needing the money for future investments. Many on here have a set % Return On Investment that they use for sales. Others sell at the holidays when there is a flush of buyers. Others hold on forever.( Ed ) Even others when they are running out of space. So it really depends on your situation and the sets you have chosen to invest in.

Listen to him bro.

Pretty much just what Huskers1236 said. If you are just starting out with a very small amount of money your best bet is to probably find some good clearance priced Lego and flip it quickly. Repeating as often as possible so you can build your funds.

Pretty much just what Huskers1236 said.

If you are just starting out with a very small amount of money your best bet is to probably find some good clearance priced Lego and flip it quickly. Repeating as often as possible so you can build your funds.

Combining Investing with flipping can make for a good combo to help the cash flowing while still picking up items to hold for a longer term/better return.

All that said you have to do your research and then your searching for those items.