Was it easy to sell?

They took a couple of weeks on ebay. After 5 years you have little competition. Fate Reforged is popular but likely just due to a couple of expensive mythics in the set. You can pull fetch lands in in this set too.

Bought War of the sparks and modern horizon.

It's still feasible to do it. I would wait until barely nobody has them for sale. The cards will rise in prices eventually due to scarcity, same with sealed product.

Did you continue to buy sealed products?

Not any more, though I have thousands of rares and mythics all of which I would sell for the right price.

I keep an eye on https://www.mtgstocks.com/interests to see what is spiking and the unload a playset on ebay. It seems to work well.

Eg.. I have a bunch of Nykthos, Shrine to Nyx, I need to list some.. it's gone up a lot lately.