Mohawk Hair Extensions

Looking to get a mohawk about 2-3 feet tall. My current hair isn't long enough, so I'm thinking of buying hair extensions instead. I'm trying to get something similar to this:

(Photo belongs to @parma.ham on Instagram)
I don't really know what's the cheapest or best option for hair extensions. I'm looking for something I can use daily and isn't ridiculously expensive. The only thing I know about the ones being used in the photo above is that they aren't clip-ins. Could anyone recommend a good place to get hair extensions like this or which extensions I should buy?