Markersupply

I've been purchasing Posca Paint pens from Marker supply for years now. They have a great selection of not only Posca paint pens, but other types of paint pens and markers. Also they carry replacements nibs/tips, which is great since these are hard to find. The prices are actually cheaper than what they charge at my local craft store. And the shipping is reasonable enough that I still save money.

Shipping is always fast, so I know when I'm running low, I can put in an order and have my replacement paint pens on a few days.

Customer service is absolutely awesome. Very reliable. A couple of months ago, I received the wrong size of replacement nibs that I'd ordered. I contacted customer service, hear me back from them quickly, and they sent me out the correct nibs right away. I didn't even have to return the incorrect ones. The rep was friendly and helpful as well.

I also want to mention the rewards program. You earn a point for each dollar spent, and accrue them to earn monetary value which you can use to pay for your order. Another bonus.