It all depends on what you want and need, a cheap option with TTL is the Nissin i-40 as mentioned above if you use manual flash (which I would recommend) Youngnuo is a very affordable option also offering remote triggers for off camera use. I have the nissin i-40 whish is easy to use and offers TTL and a couple of Youngnuo Flashes with remote triggers.
I live in Yuen Long, Hong Kong. Just bought X-E3, X-T30, 16mm 1.4/f, 18mm 2/f, and 35mm 1.4/f. Here is the set of photos I used them to record Yuen Long, Hong Kong. I only use the Film Simulation of Acros Red. I will keep updating this album. Cheers!
(From an older inquiry I responded to here)
I bought the pair listed below.
Both are made by Godox but are rebranded house brands from Adorama.
B&H also has Godox rebranded house brands though I don’t know their name for it.
The reason I went with Godox is they are inexpensive and rated very high on multiple websites.
I first bought the pair as Godox branded but the warranty was a joke. The flash and off camera support both had a card insert explainin