What format of deck would you want? Elo, Type 1 or Type 2?
Last week of Elo i played this, XingKongLianQu [1425 Elo] (Pardon my little advertising )
It's under 41k, as you can see, you might want to try it out in the future.
Not for Elo this week though, Qubik is banned and lots of Berzerk around.
It depends, if you want a deck for this week and the next you could invest 20k in spyke, but we don't know what his status will be in standard.
My advice would be to invest in cards that will also be available in the standard format, if it comes in March. For example in berzerk; at least elvis, lola, melanie and another decent card, depending on what other half you choose, for example a 3 star like rudy, kawamashi, kostner, 2 star maybe miho or drummond.
For the other half you could go with something like junkz: haze, eebiza, qubik, jiro, flanagan... all should be available in the standard format and are not too expensive, although qubik is banned this week.
Vortex will be also an important clan in standard but their cards are a little too expensive now.
If you just want to get started in ELO you could buy a budget deck, for 10-15k like mono jungo or some cheaper form of mono rescue. And when standard arrives you can decide on what cards you want to invest for the longer term.