Nothing. My B&M carries almost anything I could possibly want. They will order anything they don't have that I want. =D Prices are very competitive and I don't have to deal with shipping, returns, quality issues, problems, etc. Yesterday I bought some black liquorice juice. It cracked the tank I put it in. I paid the difference between the tank that broke and the price of a vivi nova. Took it home and the vivi shattered. Came back the next day and paid the price difference for a metal vivi nova. Worked fine from there. That entire process could have taken weeks and depending on who you purchased the liquid from you may have been SOL. They also gave me new juice since some had been wasted when the tanks cracked. For that kind of service, I will continue to use their B&M, even if their prices are slightly higher than what I could find online. Plus, where else could I get a 1000mah twist for $24? Tehehe...