refilling has become second nature for us, in a short period of time. I actually bought a little camera case for my Digital Camera that works perfect as a carrying case for my supplies. Inside it has a little elastic band on one side to hold my 5ml bottles, and a pouch on the other side to hold extra attys carts etc. I have a tiny little swiss army knife with a pair of tweezers in them, scissors etc.
I take my little tweezers and push my filler down, add about 7-10 drops of liquid, pull my filler up to the top of the cart even with the top add a drop or two to the top and pop it back on. have gotten pretty quick at the whole procedure. It can be a little intimidating at first. And be careful not to overfill to avoid juice in the mouth, ewww.
as for the eGo, Liberty Flights definately has the best prices, I searched for weeks before buying ours and compared prices everywhere! there is a spot on top left of the screen to click for 20% off and it shows the discounted prices on the shopping pages. Their prices and customer service is great! I actually ended up buying two full kits for me and the hubby and we have our main battery that lasts all day, and then we pop on our backup at night while watching tv in bed, and let our main charge.
Hubby made me a lanyard for my main batt as I almost lost it twice the first week and now it is permanently around my neck from sunup to sundown, so convenient!
good luck!