To have a 100% fail rate on multiple seeds is unheard of. Maybe they are selling old seeds? Please also be aware of their 14 day return policy (don't buy in winter and sow a week later because if you do, and the seeds don't germinate, that you are out of luck).
Cost. Typically, a bridge can range in cost from $500 per artificial tooth to $1,200 per tooth. Thus, a bridge with only one pontic will cost less than a bridge with two or three pontics. However, the cost of a dental bridge will depend on a variety of factors. Considerations include: 1  The materials used: Certain advanced materials, such as IPS e.maxÂ® porcelain or zirconia, will cost more than other types of bridges. However, because these materials are so durable and lifelike, many patients consider them an invaluable investment in their smiles and dental health.
The typical span length of arch bridges range from 40 to 150 meters.The longest arch span in the world is the New River Gorge Bridge with a main span of 518 meters.3.4.3 What They Typically CostThe typical cost of arch bridges ranges from $4,000 to $5,000 US per square meter.nlike girder and truss bridges, both ends of an arch are fixed in the horizontal direction and no horizontal movement is allowed in the bearing. Thuswhen a load is placed on the bridge, such as a passing car, horizontal forcesoccur in the bearings of the arch.