This says it's 5G but then on my cart page it says "4G LTE" is this a typo?

The product is indeed a 5G device as mentioned in the Product Specifications and Product Title. The mention of '4G LTE' might be a typo or could be indicating that it is compatible with 4G LTE networks as well.

Questions & Answers: Refurbished: Samsung Galaxy S20+ Plus 5G SM-G986U (128GB + 12GB) - FULLY UNLOCKED (CDMA / GSM) - All Carriers Verizon, AT&T, T-Mobile, Sprint - 64MP - BLUE COLOR - GRADE A (9/10) Quality - 2 days of Delivery

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Samsung Galaxy S20+ Plus 5G SM-G986U (128GB + 12GB) - FULLY UNLOCKED (CDMA / GSM) - All Carriers Verizon, AT&T, T-Mobile, Sprint - 64MP - BLUE COLOR - GRADE A (9/10) Quality - 2 days of Delivery

FULLY UNLOCKED
6 MONTHS OF WARRANTY
Screen: 6.7", 1440 x 3200 pixels (~525 ppi density)
Chipset: Qualcomm SM8250 Snapdragon 865 (7 nm+)
CPU: Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)
GPU: Adreno 650
RAM: 12GB
Storage: 128GB / 256GB / 512GB
Main Camera: 12 MP, f/1.8, 26mm (wide) + 64 MP, f/2.0, 29mm (telephoto) + 12 MP, f/2.2, 13mm (ultrawide) + 0.3 MP, TOF 3D, f/1.0, (depth)
Video: 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS
Selfie Camera: 10 MP, f/2.2, 26mm (wide
Video: 4K@30/60fps, 1080p@30fps
Battery: Li-Po 4500 mAh, non-removable
Charging: Fast charging 25W
OS: Android 10, upgradable to Android 11, One UI 3.0
Sensors: Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer - Samsung DeX, Samsung Wireless DeX (desktop experience support) - ANT+

$189^.88 –