Think these are the lowest prices they have ever been.
M10 = Mitre 10
The Mitre 10 prices are via price-beat against non-csc prices. + $10 store card with every $75 spent.
https://www.cheapies.nz/node/44910
CSC prices are via CSCBG Main
How to get CSC Membership
Twinkly Strings 100 RGB LEDs
NL $64 (or $42.91 w/ CSC group)
M10 $54.40
Twinkly Strings 250 LED RGB - 20m
NL $99 (or $87.46 w/ CSC group)
M10 $84.15
Twinkly Strings 250 LED RGBW - 20m
NL $109 (or $104.71 w/CSC group)
M10 $92.65
Twinkly Cluster 400 LED
NL $149
M10 $126.65
Twinkly Strings 400 LED RGB 32m
NL $179 (or $170.18 w/ CSC group)
M10 152.15
Twinkly Strings 400 LED RGBW - 32m
NL $189
Credit to Wakrak
https://www.cheapies.nz/comment/209603/redir
The CSC discounts you have indicated are using CSC Premium.
If you change it to CSC Main then they are even cheaper (I've only tested the first two)
For example:
Twinkly Strings 100 RGB LEDs are $42.91
Twinkly Strings 250 LED RGB - 20m are $87.46