You can buy direct from WizardLabs.us, a supplier many of us use quite often, and save some money in the process. At MBV, 236ml of UF @ 36mg/ml is going to run you $29.99 whereas it's $16.29 for 250ml of 36mg/ml at WizardLabs. Shipping at both places in pretty much the same, but MBV does have one thing over WL - speed of order processing and shipment.
I've order from WL quite a bit and sometimes it takes 2-3 days for an order to be processed and shipped. With MBV, 100% of my orders have shipped same-day and I've received them in 2-3 days.
The only thing you need to do is make sure you dilute the nicotine down to your preferred levels. So you would by your Nicotine in a PG or VG solution, then dilute it down with more PG/VG to get it to where you need it to be.