This structure seems a good way to easily fill dirt into bags for seeding. 

The following materials are needed to construct the progagation and production area.

Fence posts 3 by3 inches by 3.40 meters, Colones 3,500 each

Fence wire, 90 cm high, 1 by 1 inch (Malla 0604042) Colones 625 per meter

Gate, use existing materials

Roof for potting shed 40 by 40 feet requires 68 sheets at Colones 552 each

Wood for rectangular structures , use existing materials

Bags, 4 by 8 inches at Colones 1448 per Kg (340 bags per kilo)

Seed, unknown at this time, unknown

Soil, bulk, per 4 cubic meters Colones 30,000 

Water, estimated Colones 100,000

Shade cloth, black 20% shade, 4.2 meters, Colones 1,900 per meter

Bamboo poles, use existing materials

Budget with setup to full potential

The following budget reflects the costs of propagating the area to its full potential of 50,000 trees.

Fence posts              65 x Colones 1750 equals             Colones 113,750

Fence wire              203 meters x Colones 625 equals    Colones 126,875

Roof for potting area     68 sheet x Colones 552 equals   Colones 37,500

Bags                   50,000/340 x Colones 1448 equals      Colones 212,941

Seeds                     unknown at this time                          unknown

Soil                        Colones 30,000                              Colones 30,000

Water, (approx)       Colones 100,000                            Colones 100,000

Shade cloth       2,380 meters x Colones 1,900 equals    Colones 4,522,000

Total                                                                          Colones 5,143,066

The total in US Dollars would be around USD 10,000 provided the nursery is set up to its full potential of 50,000 trees.

Gross revenue on full potential

Based on 50,000 tree seedlings and price per tree, the following calculations can be made, with sale prices of USD 1.00, USD 1.30 and USD 3.00 per tree.

50,000 x USD 1.00   totals USD   50,000 per year

50,000 x USD 1.30   totals USD   65,000 per year

50,000 x USD 3.00   totals USD 150, 000 per year

Net revenue on full potential

Based on propagating to full capacity, the base would break even in the first operating season if trees are sold for USD 1.00. The next years, the base would invest only in bags, seed, soil and water, totaling Colones 342,941 excluding seed, which is less than USD 700 per year leading to USD 50,000 minus USD 700 equals a net revenue of USD 49,300 per year.

Budget with setup to partial potential (10,000 trees per year)

If, for financial or other reasons you only choose to construct the propagation area to a partial potential of let’s say 10,000 trees per year or 20% of the full capacity, we can roughly calculate the following.

20% of Colones 5,143,066  equals  Colones 1,028,613.20 or USD 2,057.

Gross revenue on partial potential (10,000 trees per year)

Based on 10,000 tree seedlings and price per tree, the following calculations can be made, with sale prices of USD 1.00, USD 1.30 and USD 3.00 per tree.

10,000 x USD 1.00   totals USD  10,000 per year

10,000 x USD 1.30   totals USD  13,000 per year

10,000 x USD 3.00   totals USD  30,000 per year

Net revenue on partial potential (10,000 trees per year)

Based on propagating on partial potential, the base would make approximately USD 8,000 in the first operating season if trees are sold for USD 1.00. The next years, the base would invest only in bags, seed, soil and water, totaling Colones 342,941 excluding seed, which is less than USD 700 per year leading to USD 10,000 minus USD 700 equals a net revenue of USD 9,300 per year.