When something absolutely has to be done and cannot be put off, use the adjective imperative. Imperative is from Latin imperare to command, and its original use was for a verb form expressing a command: Do it! is an imperative sentence. It's still used that way, but it's more commonly applied to something so pressing it cannot be put off: Hiring new workers has become imperative..
1 A tandem (dual) axle utility trailer starts at $1,200-$3,000 depending on size and weight capacity, and it can cost $4,000-$7,500 or more for commercial-quality utility trailers.
A popup tent trailer costs $3,000-$7,000 for a basic model (beds, dinette, icebox or mini-refrigerator, cooking appliance) and increases to $8,000-$20,000 for models with higher-end appliances, a toilet, heater, air conditioner, etc. Tent trailers are box-like (8'-18' long and 4'-6' tall) when folded for travel.