The price is the same as other cheap BiDi SFPs. However, these only work with Unifi/Ubiquity hardware, while the others I've used from 10Gtek work with everything. Since you need the right pair of these, unless the other side is Unifi/Ubiquity, this quickly becomes a showstopper. For this reason I'm giving it a low score as it's a common case that goes unaddressed at all and lets many down.
MikroTik S+RJ10 Ethernet Transceiver
10 Review
π Ximimark 1Pcs ESP8266 Network Relay WIFI Module 220V 10A DC 7-30V 4 Layers Board TVS Input Automatic Protection: Enhanced Home Automation Solution
8 Review
πΆ kuman 10pcs nRF24L01+ 2.4GHz Antenna Wireless Transceiver Module for Arduino Raspberry Pi Compatible K19
8 Review
π‘ CM19A R.F. PC Transceiver for X10 Devices
8 Review
HB-UMLS Sabrent USB 2.0 Hub with 4 Ports and LED Power Switches for Each Port
12 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
π StarTech.com NETRS2321P: 1-Port RS232 to Ethernet IP Converter, Serial over IP Device Server - Black
5 Review