I hate to raise the price so much but the prices of new chips used in the K2000 have gone up 200% and my old price is simply no longer possible on this item. Beware drastically cheaper listings from other sellers as they may using be old recycled chips.   This is ONLY for the 3.87 ROMs. The Setup ROMs shown are NOT INCLUDED in this listing but they are shown since you need to know if you have these or not before purchasing. If you do not have chips in these two spaces, stop now and find listed in my Reverb shop a separate listing for a bundle of the OS ROMs with the Setup ROMs as you will need these two chips added to make use of the V3 OS. If you already have chips in these sockets, this is the listing you should purchase. Please contact me prior to purchase if you have a much older "Calvin" based model which does not have the "J" at the end of the OS version. Your purchase will be produced with brand new USA made ROMs which are impervious to bit rot which plagues the old style ROMs used in the K2000 series and carries a lifetime warranty. Int'l shipping is with DHL Express. Unfortunately due to drastically increased cost of materials, the price has had to be raised on this item, any listing which is significantly cheaper is almost certainly selling old recycled chips which are more vulnerable to bit rot than the original chips in your Kurzweil.