The thread isn't very active but just wanted to tell that original DX700/1000/2000 pads are still available.
The part number is JVC J47503-001 and they can be found on Japanese online retailers like Rakuten JP.
https://buyee.jp/item/yahoo/shopping/e-earphone_1053
The product visual is showing some random pads, which might be confusing, but they are actually genuine DX ear pads.
2640 yen (for a single pad), which is 5280 yen, that is 49.5$ for a pair of pads. You need to go through some forwarder service like fromjapan, buyee or zenmarket to get these shipped. I paid 6900 yen including forwarder fees/shipping and international shipping (airmail small packet, EMS/DHL is too expensive for a simple pair of pads), which is 65$. Not cheap but not overly expensive.