Looking for options with the same 13" form factor I found three with a Nvidia MX250 2GB graphics card: Asus Zenbook 13 Pure, HP Envy 13-aq1011no and Lenovo Yoga S740. All had a similar mobile i7 processor SketchUp-wise (Lenovo the same one) and should cost up to $1000 less than the Dell.
While the Nvidia in these is nothing to write home about I consider it anyway better than the integrated options. None of these nor your Dell option are really meant for heavy number crunching, more to be handy to carry around. I wouldn’t like to try to use one as my main machine. I have an older Asus Zenbook that I like but not to work with heavy 3D models.