If I don't have the time to really look into things, I go with the cheapest too.

- You usually have exactly the quality you paid for, so no surprises here.

- It's often more ecological. If factory A can produce more stuff with same money than factory B, they must be doing something right. Another way to look at this would be: if you have to make shovels dirt cheap, you can't use barrels of oil/shovel, because you would have to pay for that oil.

I really cannot prove this cheap is ecological, but I've noticed that this holds true in plastic Christmas-trees, cucumbers and majority of unprocessed meat products. Chicken production should cause only 1/5 of the problems that beef production. Surprise, surprise chicken also cost's 1/5.