You are not likely to find methylcobalamin in local stores.

It is best to get online. It is not expensive, and many good online stores have it. Puritan's, iherb.com, Swanson's, Amazon.

You will pay more for the WSN formula. But that is your choice.
It is methyl B12 and benfotiamine. But you don't show a high A1C yet so saving the benfotiamine til later is going to save you some money.

This is the one I use:
http://www.puritan.com/vitamin-b-12-...000-mcg-032860
Works out to about $6.50 a month. Just over 30 cents a day.
I trialed this 2 yrs ago and tested out at 1999 after 3 months. So I know it works like a charm. Empty stomach. I just chew it up and take with water first thing in the morning.

You need to get a quality magnesium. WalMart has SlowMag and that is delayed release and easier on the intestines...no laxative effects. Two of these a day in divided doses, will be a good place to start. Some WalMarts, and Costcos, have Mag64, generic for this, at a slightly lower price. But the brand name SlowMag has come down in price too.
http://www.walmart.com/search/search...onstraint=5431

Magnesium is really important, and many people (up to 70% in US) are low. 2 SlowMag a day is about 1/2 the RDA for adults.
And it is very well absorbed too for a magnesium product.
It was originally made for doctors to prescribe and was professionally detailed for many years. It has always been OTC, but back then it was close to $20. Now WalMart has a good price for it. Epsom salt soaks really work too, so get a big container of that too.

You can move on to Benfotiamine later. (about $15 for a 2-3 mon supply on Amazon.)

WSN = $42 bucks for theirs... and they don't tell you to take on an empty stomach either.
http://www.amazon.com/gp/customer-me...pdp_images_dav
Way to much money for the same thing! I don't only search and find the best thing for our posters, I also find the best affordable ones with quality. This is because you end up needed perhaps several things and then it can become pricey. You cannot adjust your doses with fancy mixtures either and I think that is a big downside with them.