Note: this discussion will benefit readers who upgrade their phone in every 1-2 year.
Check out this new plan from Optus: Optus Upgrade and Protect plan
According to this plan if you buy a phone on a plan from Optus, then you can switch to a new phone plan in last year of your term and you walk out with your new eligible device on a device payment plan, else pay extra $99 if you're not in your last term.
There is a $15/month additional charge for this service, but it's being offered for free with new iPhone 14 range of phones at Optus.
Let's take an example:
If you have to buy an iPhone14 Pro Max 128GB outright, then you'll pay $1899 at an outlet. Next year, when iPhone15 comes out, your current iPhone's trade in value will be approx. 50% of the purchase price $1000 or so. You'll lose around $900 in value.
If you buy the same phone from Optus on a 36 months payment term term, you'll pay $52.74 per month or $632.88 in 12 months. To switch to iPhone15 next year, you'll have to pay extra $99 (as per the t&c of the plan). In total, to use iPhone14 Pro Max 128GB for an year, you paid $731.88 through Optus vs $900 through trade in.
This shows you know nothing about iPhone prices lol