Kostiner 20x20 vacuum easel

Today, I’ve picked it up 20x20 Kostiner easel with what appears to be some sort of vacuum accessory base for it. Does anyone has an experience with these kind of easels ? How do they compare to Saunders ? Any recommendations for pumps ?
I got it at a bargain (I think ) but anyone know how much these go for ?
Any feedback will be greatly appreciated

So vacuum holes are in the slots?
My vacuum easel is 20x24 with a black steel face for magnetic paper guides and powers with a kenmore canister vac. Great for borderless or pin register stuff but I use a Saunders 16x20 bladed easel more. There is one at $323 and one at $550 on ebay now, whether they get it or not... Still cheap compared to a new Beseler bladed easel.
Sounds like you got 2 in one, good deal!

I cannot compare brands for you, but most Kostiner items are designed and manufactured to be as good as it gets. They usually come with a vacuum pump, but there is no reason a reverse connected canister cleaner couldn't work as well. They do not require a huge suction force unless they leak from damage. (My recollection is that the whole surface of the easel is covered with little holes for suction. There are removable panels to cover the surface areas outside the paper area to av0id open suction. They are a great luxury if you do a larger volume of work and if you have the working area to place them. My personal plan is to sink mine flush with the working surface and connect the vacuum hose and electrical through the back wall to place the noisy vacuum pump in the next room, which is just for storage otherwise.