Acceptable entry level camping tents can be purchased at big box stores, to include Costco. Look for tents with a "tub". The more durable bottoms are resistant to punctures and leaks. Some of these are easy to deploy but are packaged in larger bags that will not fit in a backpack. This is fine, since these types of tents are often too heavy to use for backpacking anyways and will be loaded in a back of the family van. Some economy tents will leak with heavy rain due to design (toupee or nonexistent rain-fly) or overall quality of build. This may be OK for car camping where Scouts will learn how to take care of their gear, learn the value of quality gear and will have extra clothing and tarps to kept them from being too miserable.
If you don't have a durable Site/Car camping tent, you can use one designed for backpacking or likely borrow one from your troop.
Look for an affordable tent that is 2-person or greater
As new Scouts get into camping, you can upgrade to a higher quality tent as needed
Great deals can be found at Costco (seasonal) and Hiker Direct
Although cheaper, avoid tents with rainflies that don't extend to the ground (toupee style)
Tents found on Amazon are hit and miss
You might find a great deal
Quality is luck of the draw
Clostnature tents worked better than expected as a first year Scout tent
For some reason, these seem to get lost a LOT
Consider getting a pack of extra stakes
7" Gutter Nails - work fine and can take a beating
Priority on roominess and price
Alps Tents
Discounted prices at hikerdirect.com
Many options for under $100
Recommend you select one with a FULL rainfly (not a toupee)
Coleman Sundome 4
$99
Weight: 9.15 LB
Toupée rainfly provides questionable protection against rain
Expect leaks
Floor: WeatherTec™ system's tub-like floor with welded seams
Coleman Sundome 6
$134
Weight: 16lb 10 oz
Toupée rainfly provides questionable protection against rain
Expect leaks
Floor: WeatherTec™ system's tub-like floor with welded seams
Coleman Montana 8P
$170
Weight: 25lb
Large
Expect leaks
Durable, Polyguard
Coleman Cabin Tent with Instant Setup 4-person
$130
19.1lb
super quick setup
No Rainfly = wet
Double-thick Polyguard 2X
Marmot Limestone 6P
$499
Weight: 17lb 9oz
Large interior- both ends have vertical walls
REI Co-op Wonderland 6
$599
Weight: 22lbs 15oz
Large interior- both ends have vertical walls
The North Face Wawona 6
$475
Weight: 20lb 15oz
Cabin-style Large interior
Partial rain-fly
Kelty Wireless 6
$270
Weight: 17lb 3oz
Great value
Quality better than Coleman but not as good as other
REI Co-op Skyward 6
$449
Weight: 15lb 7oz
Lacks full rainfly
Cabin-style Large interior
REI Co-op Base Camp 6
$549
Weight: 20lbs 10oz
Sturdy build with good weather protection
REI Co-op Trail Hut 4
$299
Weight: 8lb 1.6oz
Crossover Tent (can be used for backpacking)
Marmot Tungsten 4P
$399
Weight: 9 lbs. 3.8 oz.
Crossover tent (can be used for backpacking)
Cabela’s Alaskan Guide Model 6-Person
$500
Weight: 33lb
Excellent protection against the elements
Big Agnes Big House 6
$480
Weight: 16lb 7oz
Cabin-style Large interior
MSR Habitude 6
$660
Weight: 14lbs
Floor: 68D taffeta polyester 10,000mm Polyurethane & DWR
NEMO Wagontop 4P
$550
Weight: 20lb 1oz
NEMO Aurora Highrise 6P
$500
Weight: 18lb 10oz