Forum:Need help deciding on/making a deck

Hi, I've been playing duel monsters casually for years now, and I think its time I tried making a good competitive deck. The problem is money and card availability. Right now I have roughly $100 to spend on cards, and I wanted to make a good deck from scratch.

Can anyone give me their ideas of what kind of deck I should/can make with that much money.

I know it wont be perfect, and I'll still be missing a few cards to really make a great deck, but I want something to start with.

So far all I can think of is maybe buying a GLAS box and trying to make a GladBeast Deck out of that.

I dont necessarily need a deck list. Just an effective deck I can make for about $100 (definitly no more than that for the time being).

Thank you in advance to anyone who helps me out :)