I think the problem is people get way too caught up in flashy, fancy weddings, and whats "easily" spent is immaterial - you've got a guy willing to go way out on a limb to show his girl he'll do anything, and you've got a woman desperate to show how "together" her life is - bang, 30k on a wedding when they make 50k/yr together. I've seen it. Personally I made money on my wedding (love asians giving money rather than useless gifts) but I think we spent about 15k. Even that was too much imo.
I think it's silly to say what is and is not too expensive. It's all relative. If you can easily spend 30k on a wedding, why not? It can be easier for one person to spend 30k on a wedding than it is for another person to spend 5k. The dollar figure is meaningless.