One, and one only. A 23 to allow me to fight my way to a rifle.
In searching the INGO site, it appears that a lot of people have more than one.
I can see myself possible having 3 in total a 19 to carry, a 21SF (full size Home Protection ) and or maybe a 36-Slimline to carry , my wife may not let me come home after the 1500
Trust me all glocks look the same to the wifey, easy to hide a new one or multiples, just take one out at a time.
Its the missing 500 dollars from the account you have to worry about.
2) for the average gun owner, Glocks have no "pride of ownership". They're not pretty, there's a ton of them out there (i.e. "everybody's got one"), and they're not terribly expensive. So they are more likely to be sold when times get tough, or used as trading fodder, with the mindset that you can always pick up another one just like it later on if you so choose.