they are hard to find because it was an option. JDM or USDM, they are the same, but because no 88-91 civic (CRX, HB or sedan) came with it standard, they are rare, and even more rare in good condition. also, because they were an accessory, honda no longer makes them. i paid $125 for my CRX one (OEM). and yes, the HB's and sedans had the optional armrest as well, and as i already said, a HB or sedan armrest will fit, but they are different from the CRX one, if that matters to you. i personally wanted an OEM CRX one. my boyfriend has a 95+ integra armrest in his 91 civic hatchback and it looks good but it is kinda wide and i personally don't think it would look right in a CRX. just my $.02