Yep, should have done a strike through by Cool Ideas for support, wasn't doing it until I got to supersonic having that wall of stuff though, since it was easier to do so than write underneath.
The 200/200 is the only case with supersonic being cheaper as a monthly package, and most of us would pick the 1Gbps/100Mbps package, so that's probably why the package is more expensive.
So you'd rather compare the 100/100 package, and you should be doing this over 24 months as that's the claw-back period.
CI 100/100 @R1219x24 + 1725 = 30981
SS 100/100 @R1279x23 = 29417
Vox 100/100 @1239x24 = 29736 but then factor in annual increase, so they'll probably end up most expensive, plus not unshaped, so lets take them out the running.
Based on the 100/100, break-even due to the month free is at the 50/51 month, so just over the 4 year marker.
Basically the saving is that one month free that needs to be caught up, if they weren't running that promotion they would be more expensive overall after just over 2 years.
The 100/10 package breaks even at month 16.
The 50/50 at ~28 months, the 50/5 at 15 months.
Also interesting to note that before the re-brand, Smart village was the worst rated fiber ISP:
https://mybroadband.co.za/news/broadband/216830-best-and-worst-fibre-providers-in-south-africa.html though they are now somehow the best, even with any reviews I find being negative? CI has mixed recently, negative the last two days since DDoS issue that seems to now be sorted. Random bad, random good.
Another problem I have with SS, is that they state "no fair use policy" but then go right ahead and contradict that:
https://mybroadband.co.za/news/fibre/273805-mtns-supersonic-fibre-uncapped-and-unshaped.html saying 10TB/month is breaking it. Yes, 10TB is a lot, but there must be less than a handful of users that actually do that, but what happens when they start reducing that limit? Mweb also started with a "reasonable" limit, then once they got enough people they started reducing it to suit their needs.
For the 10/10 package, Cool Ideas is definitely better, 10/2 break-even at about 35 months.
As I said, if you are in for the long-haul, CISP will work out cheaper, worst-case is 100/100 at just over 4 years, and the 200/200 package shouldn't really exist for CI, since the 1Gbps/100Mbps package is definitely better for consumers, and there the CISP package is over R1100 cheaper a month, so break even halfway through month 2.
Also we're not taking the given router into account, not sure what the value is there. E.g. Afrihost made a shitty move by supplying routers with 100Mbps ports, so you couldn't even max out your 100Mbps connection.