Last year, on the BC gun show circuit, there were all sorts of No5s available. They ranged in price from $400 for a well used one, usually D&Ted for a scope to $800 for one in EXC, unissued condition. Bayonets were few and far between. I bought one that had been worked over by Bubba, who thankfully hadn't gotten around to the flash hider. I bought it for the parts, which were worth more than the $150 I gave the walk in for the rifle. The rifle was D&Ted, rusty under the stock line. The top hand guard was missing as was the retaining ring and band. Why he didn't chop the forestock is another mystery. The butt pad had been removed, butt cut down and an addition had been installed by filly the butt with epoxy to attach a wooden extension. The bolt had been bent for some reason.
Still, the fore stock, trigger guard, bolt head, firing pin/spring, cocking piece and flash hider, magazine were worth more than I paid for the rifle.
No5 rifles used to carry a premium over No1 and No4 rifles back in the day. Not any more. Not sure why. They were issued and used in conflict zones, so they do have a battle history. They are handy and accurate enough for close up work, out to two hundred yards, without any modification. I've shot Moose, Deer, Bears with them at those ranges successfully. I like them. I don't like the recoil, muzzle blast.
Today, they lag behind in price. An excellent No4 can fetch $1200 to $1500 without much effort. An excellent No5 will languish at $800 for months.