Got to say, I would be very twitchy in regards SG stuff they have dumped entire ranges in the past with little warning.
Yes the common stuff you will still be able to pick up on eBay but instead of getting units at £4 for half rrp that could rise to £5.
I can remember when you could get them at £2.
So if you have the cash and want a specific force I always recommend buy it ASAP to avoid disappointment.