I had not seen this post but as my name has been taken in vain I had better reply!
First though, what is the full address of the SA.com site that you mentioned please?
Now for armystuff's rounds, and forgive me if I give some basic info you all know.
1st Picture:
British military drill rounds have the code "D", so these are D.Mark 10 drill rounds made from 1951 onwards for the army and later for the cadet forces. RG is the code for Royal Ordnance Factory radway Green in Cheshire. Millions made so worth about 1 each in good condition.
The flutes are to identify the cartridges as inert training rounds by sight and feel.
2nd Picture
This is a Drill Mark VI made at Royal Laboratories Woolwich. Introduced in 1918, the D.VI served until the end of WW2, but none were made later than the mid 1930s. In good condition worth perhaps 2 - 4 each.
The ones with the wooden bullets are Drill D.Mark VIII, introduced as an expedient drill to train the expanding army at the start of WW2. They can be found with flutes or holes or both. They are not tinned. Not worth anything much.
3rd Picture
9mm D2 RG 53 - Drill Mark 2 made by Radway Green for use with Stirling SMGs. Again millions made and only worth a few pence.
The .455" drill headstamped RL 22 IN is quite a scarce round. It is a drill Mark I Naval issue made at Royal Laboratory in 1922. As far as I know, it is the only year with the naval headstamp. I wouls say it is worth 20.
The .38 Spl is a commercial round made by PMC Korea and as far as I am concerned worthless.
The RL C II is a 455" ball Mark II round but has the wrong bullet fitted. The Mark II ball was introduced in 1897 and served until the introduction of the jacketed ball Mark VI in 1939. The intervening ball Marks III, IV and V saw little service as they were believed to contravene the St.petersburg and Hague Conventionst bullet. With the correct bullet worth perhaps 2
The .455" RL DI is a much better round, not as scarce as the Mark IN above but still a nice round. It is the most often found version of the Drill Mark I and is worth perhaps 15.
Finally, the RL .380 DI is a Drill mark I for the Enfield revolver. The Mark I ball round only lasted from 1930 to 1937 because the lead bullet was thought likely to be considered illegal. The Drill I used the same bullet and when the jacketed Ball mark II was introduced in 1937 a new D Mark II was introduced to match the ball round. Thus the Drill DI is quite scarce so in good condition is probably worth about 10.
Please note that these values are only my opinion, as I have had all the rounds concerned for years. the true value is what someone is prepared to pay.
Here are a few picture;
The range of .455" drill rounds
Three types of D mark VI
WW2 expedients, D Mark VIII (wood bullet) and D Mark IX (Jacketed)
Regards
TonyE