Teapot help? - Problem solved, thanks!

So I have a nice little adagio PersonaliTea that I adore to pieces. It’s microwavable, has a nice infuser, and makes two large cups of tea, perfect for me. However, my boyfriend has recently taken to asking for a cup of my mate in the morning, as he’s discovered that while he doesn’t like the taste of mate, it does help him stay awake. This means I have to make more than one pot, which is less convenient. Does anyone know of a reasonably priced teapot similar to the PersonaliTea? It needs to be microwavable, have a higher capacity but not be huge, have an infuser, and, I cannot stress this enough, be reasonably priced. Also, if someone has something that fits my needs that they aren’t using, I would be willing to trade for it. Thanks!