Here's another, later, post on SN, using the Telegram group URL:

*Buy, sell, trade, and offer services in exchange for Bitcoin. Peer-to-peer without a middleman*
https://stacker.news/items/20380
https://t.me/bitcoinp2pmarketplace

There are additional comments and info about this marketplace from a previous post here on SN: 

*Bitcoin peer-to-peer marketplace for products/services in Telegram*
https://stacker.news/items/19558
https://t.me/bitcoinp2pmarketplace
https://twitter.com/x218935/status/1513516529912094723
https://nitter.net/x218935/status/1513516529912094723

cryptocoin

247bf84fda

Looks interesting.  Being unstructured, Telegram search will be key though.
Merchants (or those posting WANTED requests) should add hashtags and related words so that their listing is in the search results.

bitcoin

Bitcoin P2P Marketplace - Buy, sell, trade, and offer services in exchange for Bitcoin

sleezypanda777

Looks interesting.  Being unstructured, Telegram search will be key though.
 Merchants (or those posting WANTED requests) should add hashtags and related words so that their listing is in the search results.