When it comes to free-to-play games you can count one thing, there will be a way for you to buy things with real money and you will always be fighting the urge to buy those things.
You might have a platinum will (see what I did there?), but there's always a way to get you to bend.
The PlayStation Store has a variety of Platinum and Mod bundles on sale for the PlayStation 4's free-to-play game Warframe. The original prices aren't listed, but I went ahead and listed the sale out for you below.
Here's a direct link to the sale, you can get your Platinum on faster that way.
Without further ado, here are the items on sale:
3210 Platinum + Mods
2100 Platinum + Mods
1000 Platinum + Mod