Yes I find this annoying too, however it is logical. Instead of the seller creating 3 different listngs for 1 item that comes in 3 different quantities, Ebay has allowed sellers to do it all in 1, a time saver no doubt. So even though it is annoying like everything else in life it is cheaper to buy in bulk. So the buyer does get to see what the best option is, and although this is rare for me but the other day I was looking to just spend a $1 on something I need and use a lot of, instead I spent $5 and got a hell of a deal as I was presented with a much better bulk buy option. So it does have benefits to the buyer as well. But if Ebay choose to go back to the old fashion way you would still get the $1 listing  back in your search without the other bulk buy options, which means for some sellers more time consuming with listings and for buyers no option to bulk buy and save $$$.

Although just for a different color or style it should NOT be allowed!!! Should only be used with different quanitites.