I just put a fence up on my property and wanted to paint it rather than have it turn the grey that wood fences turn as they age. I bought a 5 gallon can of stain at Home Depot for $120. Ouch. It covered only one length of the fence, I still had 2 lengths and the back sides.
I checked Home Depot every week and found (at 3 different times) 5 gallon containers that were returned for $20 each. One was a very light beige, one was light blue, almost white, and the other was navy blue. So my yard has a white length,a beige length and a light blue length but they are so light that they all look good together, and the neighbors have navy on their side.
They are happy since their trim is navy. 3 neighbors all with white houses and navy trim. And I saved $300.
I do notice that the returns for outdoor paint doesn't usually show up till the late spring into summer so if you can wait you will save lots of cash.