You can buy a lot of kind of soldering pens or soldering stations, if you prefer soldering pens, check this news.
Ebay and aliexpress offers a few soldering pens, for example TS80 or TS100. If it is not good choice for you, you can check this DIY Soldering Pen which is using high quality Weller Tips.
The soldering pen is based on STM32F031 microcontroller, the display is 0.91″ OLED and the detection of movement is used LIS2DE12.
As soldering tips is using high quality Weller RT/RTM/RTP or RTU tips.
The 3D model box is available for SLA 3D printers.
The manual is available on https://github.com/pavelrevak/rt_soldering_pen/blob/master/doc/MANUAL.md
Github project: https://github.com/pavelrevak/rt_soldering_pen
You can buy the soldering pen on tindie from 60 USD: https://www.tindie.com/products/vlk/rt-soldering-pen/
More information you can find here https://hackaday.io/project/18899-rt-soldering-pen where you can find the STL file for 3D box.
Review
My pictures of soldering pen
