Kaghan brand is being used by Gree Service centers to fill gas.
I will advise you to go with this unless you are willing to spend some extra money on Honeywell.
I wouldn't trust a technician to fill my ac with honeywell because the cylinder may be adultered or mixed with other gasses. You don't know what the cylinder had before it.
How will you tell that it is kaghan gas? Just because cylinder says so? Dont trust the technician, get your own cylinder.
If i were you i would buy one cylinder of Honeywell brand new sealed by authorized distributor and keep it in my house for any such future problems. Although if gas has leaked then the leak needs to be found as gas should not escape from a sealed split.
I dont have r134 i have r410 and got it for 14.5k as i have some contacts.
R410 honeywell cylinder has 11.3KG gas and is for 15-17k. Depending on your contacts. 16500 is retail price.
R22 should be around 10-12k for 11.3KG. (I'm not too sure but i bought r22 last year and it was in that range).