How long do these deals last? or do they just get better when the stock gets lower?

Tech Specs:

Length:

149 cm, 153 cm, 157 cm, 161 cm, 165 cm, 169 cm 

Shape:

directional tapered 

Flex:

medium (5 of 10 on Burton's scale) 

Camber:

S-Rocker (hybrid) 

Sidewalls:

10:45 

Effective Edge:

[149cm] 1125 mm; [153cm] 1165 mm; [157cm] 1195 mm; [161cm] 1235 mm; [165cm] 1275 mm; [169cm] 1315 mm 

Waist Width:

[149cm] 243 mm; [153cm] 248 mm; [157cm] 252 mm; [161cm] 255 mm; [165cm] 257 mm; [169cm] 259 mm 

Sidecut Radius:

[149cm] 7.3 m; [153cm] 7.6 m; [157cm] 7.8 m; [161cm] 8.1 m; [165cm 8.4 m; [169cm] 8.6 m 

Stance Width:

[149, 153, 157cm} 21 cm; [161, 165, 169cm] 22 cm 

Stance Setback:

2 in 

Core:

Super Fly II (wood), triax glass 

Base:

sintered 

Recommended Use:

all-mountain riding 

Manufacturer Warranty:

1 year